in how many ways can a supermarket chain select 3 out of 12 possible sites for construction of a new supermarket?
2 answers:
Answer: The total number of ways is 1320.
Step-by-step explanation: We are given to find the number of ways in which a supermarket chain selects 3 sites out of 12 possible sites for construction of a new supermarket.
Since the supermarket chain has 12 possible options and they are to select 3 out of them.
So, for first site, there are 12 options,
for second site, there are 11 options
and
for third site, there are 10 options.
Therefore, the total number of ways is given by
Thus, the total number of ways is 1320.
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Using the uniform distribution, it is found that:
A,B) 0.3 of the time does it take longer than 27 minutes for Josh’s bag to arrive in baggage claim.
C) 20% of the time does Josh’s bag arrive in less than 22 minutes.
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An uniform distribution has two bounds, a and b.
The probability of finding a value of at lower than x is:
The probability of finding a value between c and d is:
The probability of finding a value above x is:
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- In the graph, we have that the distribution is uniform between 20 and 30 minutes, thus
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Itens a and b:
- Above 27 minutes, thus:
0.3 of the time does it take longer than 27 minutes for Josh’s bag to arrive in baggage claim.
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Item c:
- Less than 22 minutes, thus:
0.2*100 = 20%
20% of the time does Josh’s bag arrive in less than 22 minutes.
A similar problem is given at brainly.com/question/15855314